<template>
	<!-- 结算 -->
	<view class="my-settle-container">
		<!-- 全选区域 -->
		<label class="radio" @click="changeAllState">
			<radio color="#C00000" :checked="isFullCheck" />
			<text>全选</text>
		</label>

		<!-- 合计区域 -->
		<view class="amount-box">
			合计:
			<text class="amount">￥{{checkedGoodsAmount}}</text>
		</view>

		<!-- 结算按钮 -->
		<view class="btn-settle" @click="settlement">结算({{checkedCount}})</view>
	</view>
</template>

<script>
	import { mapGetters, mapMutations, mapState } from 'vuex';
	export default {
		name: 'my-settle',
		data() {
			return {
				seconds: 3, // 跳转秒数
				timer: null, // 定时器
			};
		},
		computed: {
			// 结算总数、选中商品总价格
			...mapGetters('m_cart', ['total', 'checkedCount', 'checkedGoodsAmount']),
			...mapGetters('m_user', ['addstr']),
			...mapState('m_user', ['token']),
			...mapState('m_cart', ['cart']),
			// 是否全选
			isFullCheck() {
				return this.total === this.checkedCount;
			},
		},
		methods: {
			...mapMutations('m_cart', ['updateAllGoodsState']),
			...mapMutations('m_user', ['updateRedirectInfo']),
			changeAllState() {
				// 修改购物车中所有商品的选中状态
				// !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
				this.updateAllGoodsState(!this.isFullCheck);
			},
			// 结算
			settlement() {
				// 1.先判断是否勾选了要结算的商品
				if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品！');
				// 2.再判断用户是否选择了收货地址
				if (!this.addstr) return uni.$showMsg('请选择收货地址！');
				// 3.最后判断用户是否登录，没有登录则延时跳转
				if (!this.token) return this.delayNavigete();
				this.payOrder();
			},
			// 延时导航
			delayNavigete() {
				this.showTips();
				this.timer = setInterval(() => {
					this.seconds--;
					if (this.seconds <= 0) {
						clearInterval(this.timer);
						uni.switchTab({
							url: '/pages/my/my',
							success: () => {
								// 重新返回
								this.updateRedirectInfo({
									openType: 'switchTab',
									from: '/pages/cart/cart',
								});
							},
						});
						this.seconds = 3;
						return;
					}
					this.showTips();
				}, 1000);
			},
			// 展示倒计时
			showTips() {
				uni.showToast({
					icon: 'none',
					title: `请登录后再结算！${this.seconds}秒之后自动跳转到登录页`,
					mask: true, // 遮罩
					duration: 1500,
				});
			},
			// 微信支付
			async payOrder() {
				// 1.创建订单
				// 1.1 组织订单的信息对象
				const orderInfo = {
					order_price: 0.01,
					consignee_addr: this.addstr,
					goods: this.cart
						.filter((x) => x.goods_state)
						.map((x) => ({
							goods_id: x.goods_id,
							goods_number: x.goods_count,
							goods_price: x.goods_price,
						})),
				};
				// 1.2 发起请求创建订单
				const { data: res } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo);
				console.log('res', res);
				if (res.meta.status !== 200) return uni.$showMsg('创建订单失败！');
				// 1.3 得到服务器响应的 "订单编号"
				let orderNumber = res.message.order_number;
				orderNumber = 'GD20180507000000000110';
				// 2. 订单预支付
				// 2.1 发起请求获取订单的支付信息
				const { data: res2 } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', {
					order_number: orderNumber,
				});
				// 2.2 预付订单生成失败
				if (res2.meta.status !== 200) return uni.$showMsg('预付订单生成失败！');
				// 2.3 得到订单支付相关的必要参数
				const payInfo = res2.message.pay;
				// 3. 微信支付
				// 3.1 调用 uni.requestPayment()发起微信支付
				const [err, success] = await uni.requestPayment(payInfo);
				// 3.2 未完成支付
				if (err) return uni.$showMsg('订单未支付！');
				// 3.3 完成了支付，进一步查询支付的结果
				const { data: res3 } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', {
					order_number: orderNumber,
				});
				// 3.4 检测到订单未支付
				if (res3.meta.status !== 200) return uni.$showMsg('订单未支付！');
				// 3.5 检测到订单支付完成
				uni.showToast({
					title: '支付完成！',
					icon: 'success',
				});

				// 3.4 检测订单未支付
				// 3.5 检测到订单支付完成
			},
		},
	};
</script>

<style lang="scss">
	.my-settle-container {
		// 底部固定
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
		height: 50px;
		// 将背景色从 cyan 改为 white
		background-color: white;
		display: flex;
		justify-content: space-between;
		align-items: center;
		padding-left: 5px;
		font-size: 14px;

		.radio {
			display: flex;
			align-items: center;
		}

		.amount {
			color: #c00000;
			font-weight: bold;
		}

		.btn-settle {
			height: 50px;
			min-width: 100px;
			background-color: #c00000;
			color: white;
			line-height: 50px;
			text-align: center;
			padding: 0 10px;
		}
	}
</style>
